Gridview项目模板DropDownList已启用

Question

我希望仅在单击Gridview上的编辑链接后禁用DropDownList并启用它。 到目前为止，它显示在编辑链接之前和之后禁用的DropDownList 。
代码：

<asp:DropDownList ID="DropDownList1" runat="server" Height="30px" Width="190px" SelectedValue='<%# Eval("FAQGroup") %>' Enabled="false" >
    <asp:ListItem Value="Most asked FAQ"></asp:ListItem>
    <asp:ListItem Value="Normal FAQ"></asp:ListItem>
</asp:DropDownList>

aspx.cs

 protected void gvFAQ_RowEditing(object sender, GridViewEditEventArgs e)
    {
         gvFAQ.Columns[3].Visible = true;

         DropDownList DDL= (DropDownList)gvFAQ.Rows[e.NewEditIndex].FindControl("DropDownList1");
         DDL.Enabled = true;

         gvFAQ.EditIndex = e.NewEditIndex;
         bind();
    }

Answer 1

当您在RowEditing事件处理程序的末尾调用bind时，将清除并重新填充GridView，并在每行中创建一个新的DropDownList。 绑定数据后必须启用控件，例如在RowDataBound事件处理程序中：

protected void gvFAQ_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DropDownList ddl = e.Row.FindControl("DropDownList1") as DropDownList;
        ddl.Enabled = e.Row.RowIndex == gvFAQ.EditIndex;
    }
}